Department of Applied Physics, Yale University, New Haven, Connecticut 06520, USA.
School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14850, USA.
Phys Rev Lett. 2023 Mar 3;130(9):093802. doi: 10.1103/PhysRevLett.130.093802.
We experimentally generate three-dimensional speckles with customized intensity statistics. By appropriately modulating the phase front of a laser beam, the far-field speckles can maintain a desired intensity probability density function upon axial propagation: while evolving into different spatial patterns. We also demonstrate how to design speckle patterns that obtain distinct tailored intensity statistics on multiple designated axial planes. The ability to design 3D speckle statistics opens many possibilities: three-dimensional imaging and sensing, optical trapping, and manipulation.
我们通过实验生成了具有定制强度统计特性的三维散斑。通过适当调制激光束的相位前沿，远场散斑在轴向传播时可以保持所需的强度概率密度函数：同时演变成不同的空间模式。我们还展示了如何设计散斑图案，以便在多个指定的轴向平面上获得独特的定制强度统计特性。设计三维散斑统计特性的能力开辟了许多可能性：三维成像和传感、光捕获和操纵。
